<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入" maxlength="120" v-model="msg"></textarea>
    <mt-button type="primary" size="large">发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, index) in comments" :key="index">
        <div
          class="cmt-title"
        >第 {{ index+1 }} 楼&nbsp;{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | dataFormat }}</div>
        <div class="cmt-body">{{ item.content === undefined ? '没有发表评论' : item.content }}</div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain>加载更多</mt-button>
  </div>
</template>

<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      pageIndex: 1, // 默认展示第一页评论
      comments: [], // 所有评论数据
      msg: "" // 评论输入的内容
    };
  },
  created() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageIndex" + this.pageIndex)
        .then(result => {
          if (result.body.status == 0) {
            this.comments = result.body.message;
          } else {
            Toast("获取评论失败");
          }
        });
    }
  },
  getMore() {},
  postComment() {
    // 发表评论
    // 检验内容是否为空
    if (this.msg.trim().length == 0) {
      return Toast("请输入评论内容！");
    }
    this.$http
      .post("api/postcomment/" + this.$route.params.id, { content: this.msg.trim() })
      .then(function(result) {
        if (result.body.status === 0) {
          //  拼接出一个评论对象
          var cmt = {
            user_name: "匿名用户",
            add_time: Date.now(),
            content: this.msg.trim()
          };
          this.comments.unshift(cmt);
          this.msg = "";
        } else {
            Toast('发表失败')
        }
      });
  },
  props:['id']
};
</script>

<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list {
    margin-top: 20px;
    .cmt-item {
      .cmt-title {
        font-size: 14px;
        background-color: #ccc;
        line-height: 30px;
      }
      .cmt-body {
        line-height: 36px;
        text-indent: 2em;
      }
    }
  }
}
</style>
